耗竭性资源的主体是（）。 A.水资源 B.经济资源 C.人文社会资源 D.矿产资源

下图中，淡水储量最大的地区是

A、A

B、B

C、C

D、D

It’s no secret that many students love music. Whether on your way to class, heading to the gym or hanging out with your friends, music just makes you feel good. Depending on the style you choose, it can give you energy or calm you down. Here are some other important reasons for listening to music.

Childhood memories. No matter how old you are, you will always remember a song from your past. Many people keep in mind a piece of music, or a number of pieces, from their childhood. Often when you hear that song, you begin to think of particular childhood memories, such as the song Old Houses in My Hometown. Music can bring back memories you may have forgotten.

Concentration development. Listening to music helps you develop your powers of concentration, especially when you are learning to play a musical instrument. This focus will also be useful in everyday life. You will concentrate deeper in school lessons, or even just in a simple conversation.

Motivation. Often , a song playing on the radio or from a CD will remind you of a situation you are experiencing. Sometimes just listening to that song can give you motivation to get through the situation at hand. Music can often touch us more deeply than words and makes us ready for a challenge.

Encouraging creativity. Music is a creative work of art. Though not everyone who listens to music becomes an artist, people listening to music are likely to feel more creative in the task they are doing, such as writing, painting or even cleaning the house.

小题1:What’s the text mainly about?(within 10 words)

______________________________________________________________________________

小题2:What will the old songs offer to the listeners according to paragraph2?(within 5 words)

_______________________________________________________________________________

小题3:What can you do to develop your concentration after reading paragraph3(within 12 words)

_______________________________________________________________________________

小题4:How does music offer motivation?(within 15 words)

______________________________________________________________________________

小题5:What kind of music do you like best? Why?(within 20 words)

_______________________________________________________________________________

蕨类植物的输导组织中，运送水和无机盐的结构和运送有机物的结构分别是（）。

A.筛管、管胞

B.导管、筛管

C.管胞、筛细胞

D.管胞、筛管

某慢性支气管炎病人合并慢性阻塞性肺气肿后，又发生Ⅱ型呼吸衰竭，最重要的护理措施是

A．通畅气道
B．给抗生素
C．给氧吸入
D．给强心剂
E．给祛痰剂